Ca_<1-x>Sr_xFeO_<3-z>及びSrFe_<1-x>Co_xO_<3-z>の電気化学的手法による酸化とその性質 Electrochemical Oxidation of Ca_<1-x>Sr_xFeO_<3-z> and SrFe_<1-x>Co_xO_<3-z> Systems
Ca<SUB>1-x</SUB>Sr<SUB>x</SUB>FeO<SUB>3-z</SUB> and SrFe<SUB>1-x</SUB>Co<SUB>x</SUB>O<SUB>3-z</SUB> (0≤x≤1, z-0.1) of the cubic perovskite type were prepared by treating grossly oxygen-deficient samples at room temperature using an electrochemical oxidation technique. In the case of SrFe<SUB>1-x</SUB>Co<SUB>x</SUB>O<SUB>3-z</SUB>, the ferromagnetic curie temperature has been found to be raised above 3 00K for 0.4≤x≤1.0 (340K at x=0.4) by the electrochemical oxidation method. Only a few hundred mV of electrode potential has relatively more oxidation power than a considerable high oxygen pressure, however, the lack of stability (drcrease of oxygen content) after electrolysis is a weak-point.
粉体および粉末冶金 43(9), 1095-1098, 1996-09-15
Japan Society of Powder and Powder Metallurgy